2153221033 has 4 divisors (see below), whose sum is σ = 2222679808. Its totient is φ = 2083762260.

The previous prime is 2153220959. The next prime is 2153221051. The reversal of 2153221033 is 3301223512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2153221033 - 2²¹ = 2151123881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2153220995 and 2153221013.

It is not an unprimeable number, because it can be changed into a prime (2153221093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34729341 + ... + 34729402.

It is an arithmetic number, because the mean of its divisors is an integer number (555669952).

Almost surely, 2^2153221033 is an apocalyptic number.

It is an amenable number.

2153221033 is a deficient number, since it is larger than the sum of its proper divisors (69458775).

2153221033 is an equidigital number, since it uses as much as digits as its factorization.

2153221033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69458774.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2153221033 is about 46402.8127703483. The cubic root of 2153221033 is about 1291.3070967019.

Adding to 2153221033 its reverse (3301223512), we get a palindrome (5454444545).

The spelling of 2153221033 in words is "two billion, one hundred fifty-three million, two hundred twenty-one thousand, thirty-three".